Yes, 250mg of testosterone per week can build muscle. This dose is considered a supraphysiological (above normal) level for most men and is well-documented to increase lean muscle mass and strength, especially when combined with resistance training.
📊 Evidence from Clinical Research
Clinical studies provide clear, quantifiable evidence for this dose.
Direct Evidence at 250mg/week: A study on older men who received 250mg of Sustanon (a testosterone blend) every two weeks while doing resistance training showed significant gains. The testosterone group had greater increases in total fat-free mass, leg fat-free mass, and muscle thickness compared to the placebo group.
Dose-Response Data: Research shows a clear dose-dependent relationship. In a landmark study, men received weekly injections of 25mg, 50mg, 125mg, 300mg, or 600mg of testosterone for 20 weeks. The change in thigh muscle volume was +7 ml at 50mg, +15 ml at 125mg, and jumped to +32 ml at 300mg per week. This indicates that while even lower doses have an effect, the anabolic response becomes much more pronounced at doses of 300mg and above. Anecdotal reports and community consensus also frequently cite the 250-500mg/week range as the point where "drastic improvements" in muscle and strength are seen.
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